Liftgate Ajar Indicator Malfunction (TB5)

Liftgate Ajar Indicator Malfunction (TB5)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The driver information center (DIC) illuminates the Rear Access Open message when the liftgate module detects the liftgate ratchet and the liftgate sector switches are closed to ground indicating the liftgate is open. The instrument panel cluster receives a serial data message from the liftgate module indicating the liftgate ajar status.

Diagnostic Aids

For the Rear Access Open message to malfunction would require a fault in both the ratchet and sector signal circuits. This kind of failure would result in the liftgate to become inoperative in the manual mode and the power mode.

Reference Information

Schematic Reference

Liftgate Schematics Liftgate Schematics

Connector End View Reference

Component Connector End Views Sunshade - Left Front

Description and Operation

Liftgate Ajar Indicator Description and Operation Liftgate Ajar Indicator

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Select the S45B liftgate control switch-interior to the 3/4 or Max position

3. Verify the function of the liftgate while commanding the OPEN and CLOSE with the S45B liftgate control switch-interior.

• If the liftgate does not function
Refer to Liftgate Latch Switches Malfunction - DTC B153A B153A.

• If the liftgate functions

4. All OK.